HS Code 73181600
Threaded Nuts Of Iron Or Steel
Worked example
On an assessable value of BDT 100,000, the total duty and taxes payable on 73181600 would be approximately BDT 96,100.00, because the Total Tax Incidence is 96.1% of the assessable value.
What these figures mean
Threaded Nuts Of Iron Or Steel is classified under HS code 73181600, which sits in heading 7318 (Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel) of chapter 73 (Articles of iron or steel).
Under the Bangladesh Operative Tariff 2026-2027 this line attracts Customs Duty of 25%, Supplementary Duty of 20%, VAT of 15%, Advance Income Tax of 5%, Regulatory Duty of 5% and Advance Tax of 7.5%. Combined, these produce a Total Tax Incidence of 96.1%, which is the figure to multiply by the assessable value of your consignment.
The assessable value is normally the CIF value of the goods plus landing charges. Duties and taxes are applied in a defined order rather than simply added together, which is why the TTI is not the plain sum of the individual rates.
Recorded imports
Between December 2025 and May 2026, NBR recorded commercial imports under 73181600 in 6 of 6 months, totalling 1,325,112 kg at an assessable value of BDT 453,327,370. That is an average of BDT 342 per kilogram — useful as a rough check on whether a declared value looks plausible. In May 2026 it was the 652nd largest of 4,066 tariff lines by assessable value.
| Month | Net weight | Assessable value | Per kg |
|---|---|---|---|
| December 2025 | 287,158 kg | BDT 92,886,404 | BDT 323 |
| January 2026 | 397,430 kg | BDT 130,545,795 | BDT 328 |
| February 2026 | 183,029 kg | BDT 72,631,325 | BDT 397 |
| March 2026 | 199,161 kg | BDT 63,933,340 | BDT 321 |
| April 2026 | 78,106 kg | BDT 38,258,087 | BDT 490 |
| May 2026 | 180,228 kg | BDT 55,072,419 | BDT 306 |
Bonded imports. A further 24,879 kg worth BDT 42,021,722 entered under the bonded-warehouse regime in the same period — goods brought in duty-free as inputs on the undertaking that they leave again as exports, which in Bangladesh overwhelmingly means ready-made garments. Bonded entries account for 8.5% of the total value imported under this code, the rest entering commercially.
Import figures: NBR Import Statements (IM-4 commercial, IM-7 bonded), December 2025 – May 2026. Assessable value is the customs value on which duty is charged, not the retail or invoice price.
Source: NBR Operative Tariff 2026-2027. The full schedule was reconciled against NBR's online duty calculator before publication; figures were last checked against NBR's live operative tariff search on 10 October 2026.
How this line compares
Chapter 73 contains 157 tariff lines, averaging 64.73%. At 96.1%, 73181600 sits above that average by 31.37 percentage points. It is the 1st most heavily taxed line in the chapter.
Across the whole Operative Tariff the mean is 61.08%, so this line is dearer than the typical import by 35.02 points.
Within heading 7318 alone, rates run from 39.75% to 96.1% across 15 lines. Classification inside a single heading can change the bill substantially, so confirm the eight-digit code rather than working from the four-digit heading.
This line carries supplementary duty of 20%. Only 1,633 of 7,469 lines carry any SD at all, and because it is charged after customs and regulatory duty, and VAT is then charged on top of it, it affects the total far more than the rate alone suggests.